The invention discloses a transporting production line and a drying method of a product, in particular to a partition wall batten conveying line and a drying method thereof. The conveying line comprises transverse shift lifting units, a plurality of conveying long frames I and a plurality of batten brackets II, wherein the transverse shift lifting units are respectively arranged at both ends of the conveying line; each group of transverse shift lifting unit is provided with two transverse shift lifting machines III; a parallel conveyor VI is also arranged between the two transverse shift lifting machines III; and the conveying long frames I are multilayer mechanisms. The partition wall batten conveying line is arranged in a drying house, temperature in the drying house is controlled between 35 DEG C and 50 DEG C, the humidity is controlled between 50 percent and 70 percent, and the drying time is 4.5-5 hours. The invention can realize the multilayer advancing and slow advanceing of the partition wall battens placed on the batten brackets and ensure the enough drying time of the partition wall battens in a limited conveying path and has favorable drying effect. The invention has the characteristics of reasonable and simple structure, reasonable process, high automation degree, stable product quality, energy saving, and the like.